The Finely Divided, Red, Brown, and Yellow Soil-Colouring Minerals Originate

Question 32
Multiple Choice

The finely divided, red, brown, and yellow soil-colouring minerals originate by what process? A)mechanical weathering of very fine-grained, blue-grey clays B)chemical weathering of quartz and feldspars C)precipitation of insoluble iron oxides during the chemical weathering process D)mechanical weathering of the feldspars and micas in granite and rhyolite